sketch map

noun
a rough map of the principal features of a locale, as one drawn from memory.

Origin:
1870–75

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To sketch map
Example sentences
It may be useful to offer a brief resume of the main themes of the book, by way of a sketch map for a long journey.
Selecting within the rectangle will display the relevant sketch map.
For each location, an illustrative map and a zoning sketch map are provided.
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